Function tln_deent
Translates entities into literal values so they can be checked.
Parameters summary
| string | & $attvalue | the by-ref value to check. | 
| string | $regex | the regular expression to check against. | 
| boolean | $hex = false | whether the entities are hexadecimal. | 
Return value summary
| 
			boolean
		 | True or False depending on whether there were matches. | 
